PTCE Pharmacy Technician

Category - Process & Dispense

Which of the following statements accurately reflect the difference between accuracy and precision when measuring?
I. Accuracy is the measure of how close an experimental value is to the expected value.
II. Precision is the measure of how close a series of experimental values are to each other.
III. Accuracy is the measure of how close an experimental value is to the dependent variable.
IV. Precision is the measure of how close an experimental value is to the dependent variable.
  1. I and II are true.
  2. II and III are true.
  3. I and IV are true.
Explanation
Answer: A− Statements I and II are the definitions of accuracy and precision. Neither accuracy nor precision relies on the dependent variable.
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